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Numbness (dorsum of hand and forearm)

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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The radial nerve may be damaged anywhere in its course. It is most commonly affected in the upper arm where it winds round the humerus and in the extensor muscle compartment of the forearm affecting the posterior interosseous branch.

Finger and wrist drop are common, their severity depending upon the site of the lesion.

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